From beginners to the math field to math enthuthiasts; the Servo::Linux MathTutor is a great way to hone in on all your math skills. Topics covered: Basic arithmetic, exponents and roots, trigonometry, and logarithms. Distributed under the terms of the GNU GPL (Java Source Code ships with product!).

This extension adds buttons to the Customize Toolbar Window. To move them from there to the Toolbar you must right click the toolbar and press customize, select what buttons you want to use and drag them to the toolbar.

There are now 95 buttons for Firefox, 58 for Thunderbird, and 26 for Sunbird. I have received requests for more buttons to be added, this version addressed a number of those requests but not all, I am working on added them n...